This is a beautiful clear glass oil lamp in the Ball Base with Swirl Font pattern by the Dalzell, Gilmore and Leighton Company of Findlay, Ohio.  The No. 2 lamp measures 7 1/4" in height to the top of the font by 6 1/2" in diameter.  The lamp is in excellent condition with a nice No. 2 Queen Anne brass burner.  A very hard to find lamp.